Gaudí's famously flamboyant architectural style is on full display in this sprawling park and garden.

Gaze upon chocolate sculptures depicting everything from chariot races to Gaudí's famous church at this shrine to sweets.

Construction of Barcelona's iconic (but controversial) church is expected to be completed in 2026—a century after the death of its architect.

One of Antoni Gaudí's most classic buildings is well-known for its "dragon-back" design.

Beautiful Austrian natural history museum with carved ceilings and row after row of ancient taxidermy.

The Habsburgs' royal collections of art and wonders.

This series of Baroque passageways in Vienna's cultural center mix old architecture with modern art.

Baroque celebration of the end of the Great Plague of Vienna.

Collection dedicated to funeral rites, equipment, and mourning rituals of the Viennese.

This elderly couple's hand-picked collection of rare gems is one of the finest in all of Iceland.

Iceland's largest lagoon is home to stunning multi-colored icebergs.

The picturesque birthplace of Icelandic democracy is drenched in the blood of its brutal past.

This elegant arc of a waterfall marks a religious turning point.

A subterranean house of worship carved right out of the bedrock.

A seven-century-old jail tells a not-so-pleasant history of crime and punishment.

The former home of a mad diplomat is said to still be marked in bloody, arcane scrawls.

This city square is home to Amsterdam's oldest church and a statue honoring Dutch sex workers.

Established in 1638 to battle the Black Death, Hortus Botanicus Amsterdam is a treasure trove of rare flora.

An ancient knight and a symbol of the city's freedom.

A musical instrument played by the sea.

A chain of 16 wondrous lakes formed as a result of the gradual dissolution of soluble layers of bedrock.

Castle and secret tunnel withstood a siege until its owner was killed by the Holy Roman Empire, while sitting on the toilet.

A whimsical bridge adorned with decorative dragons.

This one-time health resort was used by aristocrats around the world.